winbond_9967cf.h

华邦的W996[78]cf芯片组的摄象头驱动程序

#ifndef __LINUX_WINBOND_H
#define __LINUX_WINBOND_H

#include <linux/videodev.h>

/*** W9967 Video Registers ***/
#define W9967_CROP_START_X      0x10
#define W9967_CROP_START_Y      0x11
#define W9967_CROP_END_X        0x12
#define W9967_CROP_END_Y        0x13
#define W9967_CAPTURE_WIDTH     0x14
#define W9967_CAPTURE_HEIGHT    0x15
#define W9967_VIDEO_CAPTURE_REG 0x16


#define W9967_USB_FIFO_REG      0x3c


#define W9967CF_NUMFRAMES      2          /* (each takes 900k as well) */
#define W9967CF_MAX_DATA_SIZE  640*480*3  /* 3 for rgb.. *2 for YUV?*/ 
#define W9967CF_MAX_FRAME_SIZE W9967CF_MAX_DATA_SIZE


#define W9967_ISO_PACKETS      10        /* Future use. Number of packets */
                                         

/* USB Vendor Specific requests */
#define GET_W9967CF_CONTROL    1  
#define SET_W9967CF_CONTROL    0  

/* USB Data Video Endpoint */
#define W9967_VIDEO_ENDPOINT  1


/* Video output formats.  (Bits 1-0 in CR16). */
enum { W9967CF_YUV422_PACKED=0, W9967CF_YUV420_PACKED=1,
       W9967CF_YUV422_PLANAR=2, W9967CF_YUV420_PLANAR=3};


enum { FRAME_GRABBING, FRAME_DONE, FRAME_UNUSED };

typedef struct {
	short width, height;
	char capture, capture_mode;                
	char filter, filter_type;	
	/* 0:YUV422Packed, 1:YUV420Packed, 2: YUV442Planar, 3: YUV420Planar */
	char vid_dataformat;
	/* CCIR-601 clamping: Y to 16-240, U and V to 16-235 (i think) */
	char ccir_clamp;
} w9967cfcam_reg;

/* Packet sizes for the USB Isochronous Transfer depending upon the interface
   selected */
int wPacketSize[] = { 1023,959,895,831,
		       767,703,639,575,
		       511,447,383,319,
		       255,191,217,63};

/* Main driver structure */
typedef struct {

	struct video_device vdev;
	struct usb_device *dev;

        short depth;

	char *fbuf;  /* Buffer */

	unsigned char alternateIface;
	int grabbing, error;   
	
	w9967cfcam_reg ctrlreg;

	/* picture settings (v4l) */
	short   saturation, brightness, hue;
	short	colour, contrast, whiteness;
	char	frame_depth;

	urb_t *urb;
	int  packet_size;      
	char *tbuf;            /* Transfer buffer */

	int lock;              /* Future use,don't touch */
	
	

} w9967cfcam ;

/* next lines necessary for the vdev struct below */
static void w9967cf_close(struct video_device *vdev);
static int  w9967cf_open(struct video_device *vdev, int flags);
static int  w9967cf_ioctl(struct video_device *dev, unsigned int cmd,                                                                    void *arg);
static int  w9967cf_init_done(struct video_device *dev);
static long w9967cf_read(struct video_device *dev, char *buf, unsigned long count, int noblock);


static struct video_device w9967cf_vdev_template = 
{
	name:        "Winbond W996[78]CF based webcam",
	type:        VID_TYPE_CAPTURE,
	hardware:    23478, /* Arbitrary for test */
	open:        w9967cf_open,
	close:       w9967cf_close,
	read:        w9967cf_read,
	write:       NULL,
	poll:        NULL,
	ioctl:       w9967cf_ioctl, //w9967cf_ioctl,
	mmap:        NULL, /* TODO */
	initialize:  w9967cf_init_done, /* TODO */
	priv:        NULL,
	busy:        0,
	minor:       1  /* set, not variable?!   0's used by my tvcard so 1 */
};


#endif